from pymongo import MongoClient
from ujson import loads

with open("config.json", "r", encoding="utf-8") as f:
    db_config = loads(f.read())["database"]
    f.close()

if db_config["user"] is not None and db_config["password"] is not None:
    con_string = 'mongodb://{0}:{1}@{2}:{3}/{4}'.format(
        db_config["user"],
        db_config["password"],
        db_config["host"],
        db_config["port"],
        db_config["name"]
    )
else:
    con_string = 'mongodb://{0}:{1}/{2}'.format(
        db_config["host"],
        db_config["port"],
        db_config["name"]
    )

db_client = MongoClient(con_string)
db = db_client.get_database(name=db_config["name"])

collections = db.list_collection_names()

for collection in ["users", "context", "messages", "warnings", "subscriptions"]:
    if not collection in collections:
        db.create_collection(collection)

col_users = db.get_collection("users")
col_context = db.get_collection("context")
col_messages = db.get_collection("messages")
col_warnings = db.get_collection("warnings")
col_subscriptions = db.get_collection("subscriptions")